Two spheres, one of balsa wood (diameter 40 cm) and one of steel (diameter 10 cm), have the same mass. (a) How many times greater is the terminal speed of the steel sphere than that of the wooden sphere? (b) The balsa wood sphere is now trimmed down so that it has the same diameter as the steel sphere. Find the ratio of the terminal speed of the steel sphere to that of the wooden sphere of mass 10 kg.
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